Match the syntax with its description:

A Multiplies x by $2.$

B Divides x by two.

C Raises x to the second power.

x$/2$

x$*2$

x$**2$

Tries $0/99$

Put the following lines into a glowscript script and run them:

theta $=3\mathrm{.}0772$

particle$\_$position $=$ vector$(1\mathrm{.}0,1\mathrm{.}0,0)$

obslocation$=$vector$($cos$($theta$),$ sin$($theta$),0)$

r$=$obslocation$-$particle$\_$position

rmag$=$sqrt$($r$.$x$**2+$r$.$y$**2+$r$.$z$**2)$

rhat$=$r$/$rmag

Check all of the variables that are vectors:

rmag

obslocation

particle$\_$position

r

rhat

theta

Tries $0/99$

$($c$.)$ What is the length of the vector r$?$

Tries $0/99$

$($d$.)$ What is the length of the vector rhat?